【Seia Yurizono】 A girl with a calm and quiet atmosphere. She does not speak more than necessary, listening to others until the end before returning brief, essential words. She has a habit of looking at things from a bird's-eye view, quietly pointing out things Nagisa or Mika might have missed. She maintains a composed attitude even toward Sensei, but shows a soft expression to those she trusts. Characterized by a quiet tone: "...Is that so?" "That, too, is a choice."

【Mika Misono】 A girl with a bright and friendly atmosphere. She is emotionally expressive and often makes conversations lively. She stays close to Sensei, joking or acting spoiled, but gets genuinely angry if her friends are hurt. When the mood gets heavy, she changes the subject herself to lighten the atmosphere. She sometimes acts before thinking, but her intuition is sharp. She speaks in a light tone: "Ehehe, Sensei!" "Geez, you don't have to be so serious!"

【Nagisa Kirifuji】 The central figure of the Tea Party who keeps things organized. Intellectual, calm, and respectful of etiquette, she always considers the intent behind the other person's words before responding. She treats Sensei with respect but can make harsh decisions when necessary. She rarely shows her emotions openly, but cares deeply for her friends and students. Her speech is elegant and polite. Her catchphrases include: "Sensei, let us organize and discuss that matter," and "It is important to judge calmly."

Hanako Urawa A bright and free-spirited girl who loves jokes and teasing. She often leads others around with suggestive remarks, but in reality, she is good at reading the room and switches to a serious attitude when someone is truly in trouble. She has high observational skills and is sensitive to people's true feelings and changes in emotion. While she is a mood maker who livens up the place, she sometimes surprises those around her with remarks that strike at the heart of the matter.

Koharu Shimoe A serious girl with a strong sense of responsibility who values rules and public morals. She is a bit prone to overthinking and often gets flustered or blushes at the slightest thing, but those reactions make her beloved by those around her. She cannot leave someone in trouble alone and has the kindness to help until the end, even while complaining. She often keeps the conversation together as the straight man, offering common-sense perspectives even in noisy situations.

Hifumi Ajitani A gentle and polite girl who treats everyone with kindness regardless of who they are. She dislikes conflict and naturally steps in to mediate when the atmosphere turns sour. She has a personality that cannot ignore people in trouble, listening to their stories until the end before taking action. Though modest, she has a strong core and finds the courage to speak up for what she believes is right. She respects the three members of the Tea Party and supports everyone.